Improvement in elevators



B. T. BABBrTT.

ELEVATOR.

Patented Nov. 23,1875

lN- PETERS. PHDTO-L1THOGRAPME, WASHINGTON. D. C.

UNrrEE TETES PATENT OFFICEO BENJAMIN T. BABBITT, OF NEW YORK, N. Y.

IMPROVEMENT IN ELEVATORS.

Specification forming part of Letters Patent N o. 170,327, dated November 23, 1875;

October 6, 1875.

application filed To all whom t may concern:

Be it known that I, BENJAMIN T. BABBITT, of New York, in the county and State of New York, have invented certain new and useful Improvements in Hoistin g Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, which forms part of' this specification.

rlhis invention relates to that class of hoisting apparatus knownas elevators.

The invention consists in a combination, with the hoisting car or platform, of a rotary engine, a hoistingshaft operated thereby, and certain mechanism for actuating said shaft, and for applying such motion to the raising and lowering of the car or platform by means of stationary racks in the hoistway, said engine, hoisting sh'aft, and operating mechanism all being carried by the car or platform, whereby a simple and direct application of the lifting-power from the car or platform as a base, subject to immediate control by the operator in charge of the car, is obtained.

The invention also consists in a combination of guide-rollers on the hoisting-shaf't, carried by the car orl platform, with fixed guideways in the hoistway, for directing` the car or platform, and for steadying or easing its run, as likewise the action of the hoisting mechanlsm.

Figure lis a partly broken front view or elevation of a hoisting` apparatus having my invention applied, and Fig. 2 a horizontal section thereof' on the line x fr. y

A A are fixed uprights on opposite sides of the hoistway, and B'the traveling car or platform.' Each of these uprights A is furnished with an upright rack, b, with which the hoisting mechanism gears to effect the raising and lowering of the platform. Said up'rights are also providedwith upright guideways c for guide-rollers d, connected with the car or platform, as hereinafter described, to work in. D D are counter-balances for balancing the weight of the car and its operating mechanism.

Mounted on or carried by the car or platform B is a rotary engine, E, of any suitable construction, and to which steam may be supplied by a flexible tube or hose, f, and a pipe, g, from which a cross-pipe, h, leads to valveboxes t' on opposite sides of the engine, such valve-boxes containing valves for starting ory stopping and reversing the motion of the engine. These valves, which are connected, may

which is also carried by the car or platformV B, is tted near either ofu its ends with pinions a a, which gear with the upright racks b b in the hoistway,.and whereby the engine is made to raise or lower the car or platform, as required. This forms a simple and direct application of the lifting-power from the car or platform as a base, subject to quickandq positive coutrolby the operator on they car.

The guide-rollers l d, which work up and down within the guideways c c of the hoistway, are arranged on the ends of the hoistingshaft J, and not only serve to guide and steady the car, but also tosteady and ease the run of the pinions a a within the racks b b.

'I claim- 1. The combination, with the car or platform B, of the rotary engine E, the screw H on the engine-shaft Gr, the worin-wheelIon the'hoisting-shaft J, and the pinions a a, all

carried by said car or platform, for operation iii-connection with the racks b b of the hoistway, substantially as'specied.

2. The guide-rollers d 1,Which operate in the guideways c c of the hoistway, arranged on the hoisting-shaft J, which is carried by the car or platform, whereby not only the car is guided and steadied in its course, but the hoisting-shaf't also is steadied and directed in its up-and-down motion with the car, essentially as shown and described.

p B. T. BABBITT. Witnesses:

J oHN E. DowLEY, FEED. C. MEYER. 

